Although its most recently announced phone is called Neo, it's not "the one" most people are paying attention to at this week's Mobile World Congress, as the unofficially-named "PlayStation phone" is on mass display for the first time.

Now we know why Sony has been so cagey about confirming the so-called "PlayStation phone" and didn't even say anything about it at CES last month. It was planning a big reveal via a Super Bowl commercial.